content: /* ===========================================================
   * JFreeChart : a free chart library for the Java(tm) platform
   * ===========================================================
   *
   * (C) Copyright 2000-2012, by Object Refinery Limited and Contributors.
   *
   * Project Info:  http://www.jfree.org/jfreechart/index.html
   *
   * This library is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License, or
   * (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
   * Other names may be trademarks of their respective owners.]
   *
   * ---------------
   * WindNeedle.java
   * ---------------
   * (C) Copyright 2002-2008, by the Australian Antarctic Division and
   *                          Contributors.
   *
   * Original Author:  Bryan Scott (for the Australian Antarctic Division);
   * Contributor(s):   David Gilbert (for Object Refinery Limited);
   *
   * Changes:
   * --------
   * 25-Sep-2002 : Version 1, contributed by Bryan Scott (DG);
   * 09-Sep-2003 : Added equals() method (DG);
   * 22-Nov-2007 : Implemented hashCode() (DG)
   *
   */
  
  package org.jfree.chart.needle;
  
  import java.awt.Graphics2D;
  import java.awt.geom.Point2D;
  import java.awt.geom.Rectangle2D;
  import java.io.Serializable;
  
  /**
   * A needle that indicates wind direction, for use with the
   * {@link org.jfree.chart.plot.CompassPlot} class.
   */
  public class WindNeedle extends ArrowNeedle
                                  implements Cloneable, Serializable {
  
      /** For serialization. */
      private static final long serialVersionUID = -2861061368907167834L;
  
      /**
       * Default constructor.
       */
      public WindNeedle() {
          super(false);  // isArrowAtTop
      }
  
      /**
       * Draws the needle.
       *
       * @param g2  the graphics device.
       * @param plotArea  the plot area.
       * @param rotate  the rotation point.
       * @param angle  the angle.
       */
      @Override
      protected void drawNeedle(Graphics2D g2, Rectangle2D plotArea,
                                Point2D rotate, double angle) {
  
          super.drawNeedle(g2, plotArea, rotate, angle);
          if ((rotate != null) && (plotArea != null)) {
  
              int spacing = getSize() * 3;
              Rectangle2D newArea = new Rectangle2D.Double();
  
              Point2D newRotate = rotate;
              newArea.setRect(plotArea.getMinX() - spacing, plotArea.getMinY(),
                      plotArea.getWidth(), plotArea.getHeight());
              super.drawNeedle(g2, newArea, newRotate, angle);
  
              newArea.setRect(plotArea.getMinX() + spacing,
                      plotArea.getMinY(), plotArea.getWidth(),
                      plotArea.getHeight());
              super.drawNeedle(g2, newArea, newRotate, angle);
  
          }
      }
  
      /**
       * Tests another object for equality with this object.
       *
       * @param object  the object to test.
       *
       * @return A boolean.
       */
      @Override
      public boolean equals(Object object) {
          if (object == null) {
              return false;
          }
          if (object == this) {
              return true;
          }
          if (super.equals(object) && object instanceof WindNeedle) {
              return true;
          }
          return false;
      }
  
      /**
       * Returns a hash code for this instance.
       *
       * @return A hash code.
       */
      @Override
      public int hashCode() {
          return super.hashCode();
      }
  
  }
  
  